Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Osteoporosis
Abstract number: 26229
SACRAL INSUFFICIENCY FRACTURES SECONDALY CAUSED
PARASYMPHYSEAL INSUFFICIENCY FRACTURES: AN UNEXPECTED CAUSE
OF PAIN IN THE POSTMENOPAUSAL WOMEN.
Takaya NAKAJIMA, Eigi SOGO, Katsuhisa TANABE
Department of Orthopaedics, Nishinomiya Municipal Central Hospital, Nishinomiya,
Hyogo (JAPAN)
Background: Older patients tend to suffer from osteoporosis. In such cases, several
types of fractures can easily occur. Purpose: We report four cases of sacral
insufficiency fractures diagnosed within the department of Orthopaedics in our
hospital over the last three years. Case Reports: All cases were postmenopausal
women and in osteoporotic condition, suffered from the unknown sudden-onset low
back pain more than a month before they came to our hospital and we made the
diagnosis. Not only the patients themselves but also their families were all fear of
some kind of malignant disease. All cases were accompanied by parasymphyseal
insufficiency fractures secondly. All patients complained of the pain especially when
they sit, but it became less when they lay down, stand up or walk. In the evaluation of
abnormalities in their pelvic ring, CT and MRI were very helpful. All patients had
complete resolution of pain within nine months. Discussion: The structure of pelvis is
ring shaped. So once any part of it ruptured, more stress on the no fracture part of
pelvic ring become the cause of the another fracture on the pelvic ring. The patients
with sacral insufficiency fracture often suffered from osteoporosis, so other fractures
on their pelvic ring might be easily occoured. Conclusion: When older patients
complain of any discomfort around their low back, sacral insufficiency fractures must
be considered. If the diagnosis were delayed, it is better to take care that other
fractures within their pelvic ring might have occurred secondly.
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